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1999 Cummings 6BTA 5.9 M-3. I’m chasing oil gauge issues on both engines. At low RPMs (<1,000) no issues, all gauges indicate rock steady. When pushing up to say 2,000 one or both gauges will start to swing erratically, and eventually fall to zero. This typically leads to an engine alarm in a few minutes (though not always – not sure why). Jogging the throttles to bring RPMs up and down tends to bring the gauges off the zero, but again they swing erratically.
Going to start with the easy stuff … connections at the gauges and on the wiring harness/grounds. Is there something I can put on/coat the connections after I check/clean them off a bit to help ensure the connections stay good for as long as possible?
If the connections aren’t the issues, I’ll move on to testing the gauges (though I doubt that’s the problem since the engines often times will alarm, indicating it’s the signal coming to the helm) and eventually the sensor/senders.
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